I wanted to throw up a post for good news among Expo owners. i bought my 99 Eddie Bauer with the 5.4L with 52,000 miles on it. I religiously change the oil and it runs great. It blows no smoke. Just today I think I might have a problem with the Idle Air COntrol, because it stalls and idles very very low. Everything is original, Fuel pum, Trans, motor. I thought it might be the fuel pump any ideas? It runs fine when driving down the road, as well as no check engine light. No has 175K

if it isn't the IAC sensor I'd check the coolant temp sensor. It would be good to get a fuel pressure test done as well. Then you'll know if the pump is slowly going, about to go or will last for another 100K!

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